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, GUSEIONING DEVICE PoR TYPE BEDS. No. 380,182. Patented Mar. 27, 1888.

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UNITED STATES PATENT Chinon;y

oHARLEs H. CAMPBELL, on wATERTowN, NEW YORK.

CSHIONING DEVICE FOR TYPE-BEDS.

SPECIFICATION forming part of Letters Patent No. 380,182, dated March27, 1888.A

Application iiled J une 15, 1887.

To all whom/it may concern/.- y

Be it known that I, CHARLES H. CAMPBELL, of Watertown, in the countyv ofJefferson, in the State of New York, have invented new and usefulImprovements in Cushioning Devices for Type-Beds, of which thefollowing, taken in connection with the accompanying drawings, is afull, clear, and exact description.

This invention relates to the class of cylinder-presses which have areciprocating typebed under the impression-cylinder. In this class ofprinting-presses it is necessary to provide suitable means forovercoming the momentum of the type-bed at the end of its stroke andassisting the actuating mechanism of the press in starting'the type-bed`in its retrograde For this purpose there are usually employed cushionsor springs of different kinds, which in some instances consist of apiston moving under the resistance 'of compressed air in a cylinder, andin other cases the springs are of the form of helical wire coils whichresist the movement of pivoted arms arranged to receive the impact ofthe type-bed at the end of the stroke thereof. It is this latter speciesof type-bed cushioning and repelling devices to which my presentinvention pertains. Y

The invention consists in improved devices for readily releasing thetype bed from the force of the repelling-sprin g when it is required toturn the press mechanism 4over either center by hand, all as hereinaftermore fully described, and specifically set forth in the claims.

. In the annexed drawings, Figures l and 2 are side views takenimmediately at the side of the repelling-arm of a type-bed cushioningand repelling device embodying my improvef ments and showing the same intwo of its operative positions. Fig. 3 is an end view of the same. Fig.4 shows the repelling-arm released from the force of the mainresistingsprings. Fig. 5' is an inner side lView of the Y lcouplingportion of the repelling-arm. Fig.

6 isa detached plan view of the main resisting-springs; and Fig. 7 is atransverse section on line w w, Fig. 4.

Similar letters of reference indicate corre- Sponding parts.

Serial No. 241,336. (No model.)

vwhich may-be driven in any suitable or wellthe sides thereof. The upperend of each ofi vsaid arms has pivoted to it the roller t,vvhich, duringthe approachl of the type-bed B to the end of its stroke, runs onto oneof the usual shoes, s, which project from the end of the :type-bed, asshown in Figs. l'and 2 of the At the side of the arm C, l place a lever,D, pivoted to the shaft g, and connected with the cross-stay F ofthepress frame by a springcoupling, l,consisting of rods b b, eachconnected at one end to the cross-stay F and extending througll a yoke,c, and having a yoke, c', secured to theirfree ends, and a rod, b',connected at one end to the lever D above thev pivot thereof, andextending through the yoke c and secured to the yoke c between the rodsb b, and springs d d d are interposed between4 the said yokes, asillustrated in Fig. 6 of thedrawings.

In an eye extending transversely through the arm' C is journaled astud-pin, fi, to the ends of which and respectively at opposite sides ofthe arm are rigidly secured the dog f and the latch Z. a shoulder, a,and an abutment, n, which latter is adapted to support the arm C When inits normal position, as shown in Fig. 1 of the drawings, and theshoulder a is in such 'a position and the dogfofsuch a shape and lengthas to allow said dog to drop into engagement with the said shoulder whenthe arm C rests against the abutment n, and thus the arm and 'lever arelooked together to act as if formed in one piece and receive jointly theforce of the spring-couplingl I, which draws the lever D, with the arm Clocked thereon, toward the end of the` type-bed B, and a prop, L,secured to the base of the press-frame and encountered by the lever D initsaforesaid movement, serves to support said lever and arm in theirnormal position.

To the arm C is connected a rod, r, the free Th'e lever D is providedwith,

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end of which slides through a bar, u, rigidly secured to thepress-frame, and on this bar is mounted a spiral spring, e, which iscompressed between the bar u and the coupling of 5 the rod r on the armC, and serves to normally hold the said arm resting against the abutmentn on the lever D, and consequently the dog f is normally in engagementwith the shoulder a and the arm and lever normally ro locked together.

In the approach of the type-bed B to the end of its stroke the shoe sengages the roller t and crowds back the arm C in opposition to theresistance of the spring-coupling I, and this resistance overcomes themomentum of the type-bed B and assists the same in its reverse movement.When lit is desired to move the press mechanism over the center by hand,the

l repelling-'arm C can be liberated from the resistance of thespring-couplin g I by raising the latch l, which throws the dog f out ofengagement with the shouldera of the leverD. The

arm C is then comparatively free to swing back and forth. The onlyresistance to be overcome in its movement in one direction is thatreceived from the spring e, and this is insignificant, it being merelysufficient to throw the arm C onto the abutment u of the lever D whenthetype-bed is moved away from the roller t of the said arm.

Along the side ofthe press-.frame A,I extend a shaft, O, journaled insuitable bearings secured to said frame, and to this shaft I attach anarm, P, which reaches with its free end under the latch Z, and isprovided with a vertical chambered sleeve, P, in which is fitted toslide a pin, o, which is supported with its head normally above the top'of the sleeve by means of a spiral spring seated in the chamber of thesleeve.

By turning the shaft O the free end of the arm P is raised,so as tocause the pin o to lift the latch l and thusthrow the dogfout ofengagement with the shoulder a of the lever D when desired to liberatethe arm C from the resistance of the spring-coupling I. The shaft O maybe turned either by the pressure of the attendants foot onto a treadlesecured to the shaft or by a suitable hand-lever, m, attached to saidshaft.

The spring-support of the pin 12 on the arm P is necessary for thisreason, viz: If the shaft O were partially turned and the pin v raisedwhile the arm C and lever D were locked together and in operatingposition, as shown in Fig. 2 of the drawings, the return of the arm G toits normal position would cause the latch Zand piu o to collide andbreak one or the other of said parts ifthe pin u were not capable 6: ofyielding to such contact.V

I do not claim, broadly, a spring-actuated repelling-arm arranged toreceive the impact of the type-bed at the end of its stroke, as I amaware the same is not new; but

XVhat I do claim as my invention is- 1. In combination with thepress-frame, reciprocating type-bed, and the movable cushioning-armarranged to receive the impact of the type-bed at the end of its stroke,a repelling-spring connected with the said cushioning-arm by a couplingadapted to release the arm from the force of said spring, substantiallyas and for the purpose set forth.

2. In combination with the press-frame, re-

ciprocating type-bed, and the movable cushioning-arm arranged to receivethe impact of the type-bed at the end of its stroke, a.V typebedrepellingspring, a lever connected to said spring, and a couplingadapted to connect and disconnect the cushioningarm to and from the saidlever, substantially as and for the purpose specified.

3. In combination with the press-frame A, reciprocating type-bed B, andrepelling-arm G, the lever D, provided with vthe shoulder a, 83 thespring-coupling I, connecting the lever with the press-frame, the springe, opposed to the rearward movement of the arm C, and the dog f,connected to s aid arm and adapted to engage -the shoulder a,substantially as de- 9o scribed and shown.

4. In combinationwith the press-frame A and type-bed B, 'theshaft g,journaled on said frame, the arm C, rigidly sccured'to said shaft, thelever D, pivoted on the same 'shaft vand provided with the shoulder aand abutment n, the stud-pin i, journaled inthe arm C, the dog' f andlatch Z, rigidly secured to opposite ends of the said stud-pin, thespring-coupling I, connecting the lever D with the press-frame, and thespring e, opposed to the rearward movement of the arm C, substantiallyas describedand shown. Y Y

5. In combination with the press-frame A, typebed B, arm C, lever D, anddog f, detachably connecting said arm and lever and provided with thelatch l, the shaft O, arm P, projecting from said shaft and reachingunder the aforesaid latch, and the spring-supported pin v, carried onthe free end of the arm P, substantiallyas and for the purpose setforth.

In testimony whereof I have hereunto signed my name and aiixed my seal,in the presence of two attesting witnesses, at Syracuse, inthe' countyof Onondaga, in the State of New York, this 7th day of June, 1887.

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I l CHARLES ll. CAMPBELL. WVitnesses:

H. P. DENIsoN, C. BENDIXON.

